KR102045599B1

KR102045599B1 - Concrete distributor mast

Info

Publication number: KR102045599B1
Application number: KR1020157006258A
Authority: KR
Inventors: 조헨 루펠; 피터 하셀; 마르틴 구센바우어; 마르틴 리비니우스; 칼 웨스터만; 로만 리벤슈타흘
Original assignee: 푸츠마이스터 엔지니어링 게엠베하
Priority date: 2012-08-31
Filing date: 2013-07-11
Publication date: 2019-11-15
Also published as: CN104603378A; US20150204089A1; KR20150052082A; CN104603378B; US10119283B2; WO2014032840A1; DE102012215469A1; EP2890854B1; EP2890854A1

Abstract

The present invention relates to a concrete distributor mast (10) having a plurality of mast arms (14, 16, 18, 20) that are movable relative to each other. The mast arms are connected to each other in an articulated manner at the joining points, and in the joining point regions, the hinge points 30 to which the driving part is coupled with the engaging members 32, 34, 35 of the engaging mechanism causing the mast arm movement are connected. Have Hinge components that form the bearing axis 36 and are arranged across each mast arm 18 in the transverse direction are located at the hinge points 30 of the mast arms. According to a particular form of the invention, one or more of the hinge components is connected to each mast arm 18 for rotation and protrudes outwardly on both sides at the free end beyond the mast arm for rotation. It has a hinge pin 38 connected to the mast arm. A bearing shell 42 is arranged above the ends 40 of the hinge pin 38 protruding beyond the mast arm for rotational mounting of the engaging members 32, 34 of the coupling mechanism or the adjacent drive. As a hinge component, instead of hinge pin 38, two pivots 38 'aligned side by side may also be used.

Description

Concrete Splitter Mast {CONCRETE DISTRIBUTOR MAST}

The present invention relates to a concrete distributor mast having a plurality of mast arms that are movable with respect to one another and are connected to each other at joining points and connected to a rotating head in an articulated manner, wherein the mast arms in the joining point regions are mast arm movements. And hinge points to which the drive member is coupled to the coupling member of the coupling mechanism, wherein one or more of the hinge points has a hinge component that forms a bearing axis and is arranged on one of the coupling members or the mast arm.

Known distributor masts, in particular distributor masts for concrete pumps, have a plurality of mast arms which are connected to one another in the area of the joining point and to the rotating head in an articulated manner. Each coupling point is provided with a drive member and a coupling mechanism, which drive member is for example configured as a hydraulic cylinder and the coupling mechanism is connected downstream and driven through the coupling member. The drive of the member is transmitted to the mast arm, which must be moved from a group consisting of a push rod and a deflecting lever. The actual hinge is formed as follows. A tubular bushing, on which a bearing shell is located on the inner side, is welded to a mast arm, which is generally formed as a box profile at the hinge point. The hinge pin, which can rotate about its own axis relative to the bushing due to the bearing shell, is inserted through a welding bushing. Here, the bushings, bearing shells and pins form the actual rotating bearing of the hinge. The pins protrude laterally beyond the mast arm and the kinematic elements required for the engagement mechanism, such as push rods or deflection levers, can be attached to the pins and are firmly fixed against rotation. . A disadvantage of this known configuration is the construction cost inevitably caused by the welding bushing required in this case. These disadvantages apply more when a plurality of hinge points with weld bushings provided on the coupling member are provided for each coupling member.

The present invention aims to improve the known concrete distributor mast of the type mentioned above by means of individual hinge points with a simple configuration in the area of the joining point.

In order to achieve the above object, a combination of the features described in claims 1, 6 and 11 is proposed. Improvements and preferred variants of the invention are described in the dependent claims.

The solution according to the invention is based, in particular, on the concept that when the weld bushing is removed, the number of necessary parts for each hinge point can be reduced and as a result significant cost and weight savings can be achieved. To implement this, according to a first variant of the invention, the hinge component is connected to the mast arm for rotation and protrudes outwards on both sides beyond the mast arm at the free end. With a hinge pin, a bearing shell is arranged over the ends of the hinge pin protruding beyond the mast arm for rotational mounting of an adjacent mast arm or coupling member or drive of the coupling mechanism. . Instead of conventionally known welded bushings with bearing shells, according to the invention, the hinge pins fit directly into the mast arms and the mast arms are rigidly connected to the joining technique, preferably welded to prevent rotation. .

In order to achieve a lightweight configuration, according to a preferred variant of the invention, the hinge pin comprises two separate pin halves, each of which has one of the projecting ends and at the separation point. Welded together.

Accordingly, the pin halves are preferably formed in a hollow design.

The weld bushing is now removed, so that the bearing shell is no longer attached inside the weld bushing, but instead is attached to the outside of the protruding hinge pin. Due to the externally arranged bearings, the associated engagement member can rotate relative to the hinge pin. In the case of the solution according to the invention, the hinge pin, the bearing shell and the engagement member are fixed and thus form a bearing at the hinge point. The bearing shell and the engagement member are advantageously fixed on the ends of the hinge pin and prevented from being pulled out.

In a second variant of the invention, the hinge components have two pivots aligned with one another, the two pivots being connected to the mast arm for rotation and respectively past the mast arm The bearing shell is arranged on the ends of the pivot projecting beyond the mast arm for rotational mounting of the drive or the engaging member of the adjacent mast arm or coupling mechanism and projecting to one side in the direction and connected to the mast arm for rotation. The bearing pivot of the second variant of the invention is inevitably created by the hinge pin of the first variant and is shortened and separated in the central region.

In a preferred variant of the invention, one or more of the mast arms have two web plates arranged at lateral distances from each other and formed as a box profile. With a welded construction, the hinge pins or pivots have a ring portion or ring element projecting radially past the pin or pivot surface and arranged at a distance from each other between the web plates. Here, the hinge pin or pivot pin and the web plate may be further connected to each other by a weld seam or an adhesive seam as a seam root with respect to the ring portion.

According to a third variant of the invention, the hinge component is arranged over one of the coupling members and the hinge component forms a bearing axis and is arranged over the coupling member in the transverse direction, the hinge component being A coupling member or additional drive of an adjacent mast arm or coupling mechanism, having hinge pins connected to the coupling member for rotation and protruding outwardly on both sides past one coupling member at the free end and to one coupling member for rotation; For rotational mounting of the bearing shell, a bearing shell is arranged on the ends of the hinge pin that protrude past the engagement member. Here, the engagement member may have two web plates arranged at a distance in a transverse direction from each other, in the hinge point region the hinge pins are arranged over an intermediate space between the web plates and each in the web plate. It protrudes outwardly from the free end through an aperture of and is connected to the web plate for rotation and is preferably welded. In principle, the hinge pins can be assembled from two separate pin halves, each of which has one of the projecting ends and is welded to each other at the point of separation.

According to a further preferred variant of the invention, the engaging members are formed from a group consisting of hydraulic cylinders, push rods and deflecting levers as kinematic elements. The coupling mechanism between the mast arms is advantageously configured as a Watt or Stephenson chain.

The invention is described in more detail below with respect to exemplary embodiments schematically illustrated in the accompanying drawings:
1A is a side view of a truck-mounted concrete pump that includes a concrete distributor mast.
1B and 1C are enlarged views extracting portions from FIG. 1A and two binding members from FIG. 1B, respectively;
FIG. 2 is a cross-sectional view (first modification) showing a hinge point cut along the intersection line II-II of FIGS. 1A and 1B;
3 shows a modified representative embodiment (second variant) corresponding to FIG. 2;
4 is an enlarged cross-sectional view showing a hinge point cut along the intersection line IV-IV of FIGS. 1B and 1C (third modification).

The truck-mounted concrete pump 2 according to FIG. 1a has a bogie 6 comprising a substructure 8 supporting the concrete distributor mast 10. The concrete distributor mast 10 is accommodated with the rotating head 4 on the mast trestle 5 of the substructure 8 and the mast arms 14, 16, 18, 20 are horizontal axis of rotation. It has articulated hinges 12 that can pivot around (A, B, C, D). A concrete conveying line 28 having a pipe segment 26 and a pipe bend 22, connected to each other by a rotary joint 52 and a pipe joint 50, is guided through the concrete distributor mast 10 ( guided).

1B, 2 and 3 show enlarged views of several mast arms 18. The mast arm 18 has a welded construction formed as a box profile similar to the mast arms 14, 16 and 20. The mast arms, which are preferably made of steel, each have an upper boom 54 and a lower boom 56 connected to each other by two web plates 58 and 50 opposite each other.

The mast arms of the concrete distributor mast are connected to each other in an articulated fashion at the coupling point in the articulated hinge 12 region. The mast arms at the coupling points have hinge points 30, the drive and coupling members 32, 34, 35 of each coupling mechanism causing the movement of the mast arm. Hinge points are combined. Some of the hinge points 30 of the coupling mechanism are formed by a hinge component that forms a bearing axis 36 and spans the mast arm 18 in the transverse direction.

In the exemplary embodiment according to FIG. 2, the hinge components are connected to each mast arm 18 for rotation and protrude outwards on both sides from the free end 40 past the mast arm 18 and for rotation. Hinge pins 38 having hinge pins 38 connected to the mast arm 18, wherein a planar bearing shell 42 for one of the coupling members 34 or drive of the coupling mechanism projects beyond the mast arms. Are arranged over the ends 40 of the < RTI ID = 0.0 > In this exemplary embodiment, the mast arm 18 has two web plates 58 and 60 and a box profile arranged at a lateral distance transversely from each other, and the hinge pin 38 has a web plate ( It spans the intermediate space 46 between 58, 60 and protrudes outwardly from the free end 40 through the respective holes 48 in the web plates 58, 60. In addition, the hinge pin 38 has two ring portions 55 or ring elements that radially protrude above the pin surface and are arranged at a distance from each other between the web plates 58, 60, Hinge pins 38 and web plates 58, 60 are further connected to each other by weld seams or adhesive seams 49 which are supported by seam roots for the ring portion or ring element. . The bearing shell 42 and the engaging members 34 are fixed on the outer side of the hinge pin 38 and are hinged by a head 51 screwed or plugged thereon. 38) is prevented from being pulled out.

In the exemplary embodiment according to FIG. 3, the hinge components have two pivots 38 ′, which are connected to each mast arm 18 for rotation and the free end 40. Representative in accordance with FIG. 2 in that it protrudes outwardly on both sides beyond the mast arm 18 and is connected to the mast arm 18 for rotation and protrudes outwardly beyond the mast arm at the end 40. It differs from an Example. A planar bearing shell 42 for one of the engagement members 34 of the engagement mechanism is arranged above the protruding ends 40 of the pivot 38 ′. In addition, in this exemplary embodiment, the mast arm 18 has two web plates 58, 60 and a box profile arranged at a distance in the transverse direction from each other. The pivots 38 ′ engage in the intermediate space 46 and project outwardly at the free end 40 through respective holes 48 in the web plates 58, 60, according to FIG. 2. In a similar manner to the hinge pin 38, it is connected to the web plates 58, 60 by a welding shim 49 for rotation. The bearing shell 42 and the engaging members 34 are fixed on the outer side of the pivot 38 'and pulled out of the pivot 38' by the head 51 screwed or plugged thereon. Pulling is prevented.

The exemplary embodiment according to FIG. 4 differs from the exemplary embodiments according to FIGS. 2 and 3 in that the hinge pin 38 is welded to one of the engagement members 34 rather than to one of the mast arms. In the exemplary embodiment shown, the engagement member 34 has two web plates 58 ', 60' arranged at a distance in the transverse direction from each other. The hinge pin 38 spans the intermediate space 46 'between the web plates 58, 60 and free ends through respective holes 48' in the web plates 58 ', 60'. It protrudes outward at 40 and is connected to the web plates by a double weld seam 49 'for rotation. In this exemplary embodiment, the hinge pin 38 comprises two separate pin halves 39 ', 39 ", each of which has one of the protruding ends 40 and the central separation point 37 The bearing shell 42 and the additional coupling members 35 are fixed to the protruding end 40 of the hinge pin 38 so as to be screwed or plugged on top of the head 51. Pulling away from the hinge pin 38 is prevented.

The mast head or mast arms 14, 16, 18, 20 positioned adjacent to the rotary head 4 and the rotary head 4 together with the drive and engaging members 32, 34, 35. And form a coupling mechanism for the relative movement of the mast arm in the region of the articular axis (A, B, C, D). Here, the coupling mechanism is preferably configured as a Watt or Stephenson chain.

In summary:

The present invention relates to a concrete distributor mast (10) having a plurality of mast arms (14, 16, 18, 20) that are movable relative to each other. The mast arms are connected to each other in an articulated manner at the joining points, and in the joining point regions, the hinge points 30 to which the driving part is coupled with the engaging members 32, 34, 35 of the engaging mechanism causing the mast arm movement are connected. Have Hinge components that form the bearing axis 36 and span across each mast arm 18 in the transverse direction are located at the hinge points 30 of the mast arms. According to a particular form of the invention, one or more of the hinge components is connected to each mast arm 18 for rotation and protrudes outwardly on both sides at the free end beyond the mast arm for rotation. It has a hinge pin 38 connected to the mast arm. For rotational mounting of the engaging members 32, 34 of the coupling mechanism or adjacent drive, a bearing shell 42 is placed on the ends 40 of the hinge pin 38 that protrudes beyond the mast arm. Are arranged. As a hinge component, instead of the hinge pin 38, two pivots 38 'aligned with each other can also be used.

2: truck-mounted concrete pump 4: rotating head
5: mast trestle 6: view
8: Substructure
10: concrete distributor mast 12: articulated hinge
14, 16, 18, 20: mast arm 22: pipe bend
26 pipe segment 28 concrete transfer line
30, 30 ': hinge point
32: drive member (hydraulic cylinder) 34, 35: coupling member
36: bearing axis 37: separation point
38: hinge pin 38 ': pivot
39 ', 39 ": Pin half 40: Free end
42: bearing shell 46: intermediate space
48: hole 49, 49 ': weld seam
50: pipe joint 51: head
52: rotary coupling portion 54: the upper boom
55: ring portion 56: lower boom
58, 60, 58 ', 60': Web plate A, B, C, D: axis of rotation

Claims

Concrete distributor mast with a plurality of mast arms 14, 16, 18, 20 which can pivot about one another about a horizontal axis of rotation and which are connected to each other at joint points and connected to the rotating head 4 in an articulated manner. As such, the mast arms in the engagement point regions have hinge points 30 to which the drive is coupled with the engagement members 32, 34, 35 of the engagement mechanism that cause mast arm movement, and the drive and engagement members 32, 34. 35 are constructed from a group consisting of a hydraulic cylinder 32, a push rod and a biasing lever 34 as kinematic elements, wherein one or more of the hinge points 38 are bearings. In a concrete distributor mast having a hinge component that forms an axis 36 and spans the mast arm in the transverse direction,
The hinge component has a hinge pin 38 projecting outwardly on both sides at the free end 40 past the mast arm 18 and connected to the mast arm 18 for rotation,
For rotational mounting of the coupling member 34 or drive of the coupling mechanism, a bearing shell 42 is placed on the ends 40 of the hinge pin 38 protruding beyond the mast arm 18. Arranged,
One or more of the mast arms 18 has two web plates 58, 60 arranged at a lateral distance from each other and has a box profile (upper boom and lower boom). has a welded construction formed as a box profile,
In the region of the hinge point 30, the hinge pin 38 is arranged over the intermediate space 46 between the web plates 58, 60 and free through each hole 48 in the web plates 58, 60. A concrete distributor mast, characterized in that it projects outwardly at the end 40 and is connected to the web plates 58, 60 for rotation.

Concrete distributor mast according to claim 1, characterized in that at least one hinge pin (38) is welded to the web plate (58, 60).

The ring ring (55) according to claim 1 or 2, wherein the hinge pin (38) is radially projected past the pin surface and arranged at a distance from each other between the web plates (58, 60). With ring elements, the hinge pin 38 and the web plates 58, 60 are connected to each other by welding seams or adhesive seams 49 which are supported by seam roots against the ring portion or ring element. Concrete distributor mast, characterized in that further connected.

The hinge pin 38 comprises two separate pin halves 39 ', 39 ", each of which has one of the protruding ends and the separation point 37. Concrete distributor mast, characterized in that welded to each other).

Concrete distributor mast with a plurality of mast arms 14, 16, 18, 20 which can pivot about one another about a horizontal axis of rotation and which are connected to each other at joint points and connected to the rotating head 4 in an articulated manner. As such, the mast arms in the engagement point regions have hinge points 30 to which the drive is engaged with the engagement members 32, 34 of the engagement mechanism that cause mast arm movement, and the drive and engagement members 32, 34 are It consists of a group consisting of a hydraulic cylinder 32, a push rod and a biasing lever 34 as kinematic elements, wherein one or more of the hinge points 38 forms a bearing axis 36 and is arranged on the mast arm. In a concrete distributor mast having a hinge component,
The hinge component has two pivots 38 'aligned side by side with the two pivots 38' protruding one side outwardly through the mast arm 18 and for mast rotation. Connected to the arm 18,
For rotational mounting of the engagement member 34 or drive of the engagement mechanism, a bearing shell 42 is arranged above the ends 40 of the pivot 38 ′ protruding beyond the mast arm 18,
One or more mast arms of the mast arms 18 have two web plates 58, 60 arranged at a distance transversely from each other and have a welded configuration formed as a box profile with an upper boom and a lower boom,
In the hinge point 30 area, the pivot 38 ′ is engaged in the intermediate space 46 between the web plates 58, 60 and free ends through respective holes 48 in the web plates 58, 60. A concrete distributor mast, protruding outward at 40 and connected to the web plates 58, 60 for rotation.

Concrete distributor mast according to claim 5, characterized in that the pivot (38 ') is welded to the web plate (58, 60).

7. The pivot 38 'and the respective pivot 38' have a ring portion 55 or ring element projecting radially beyond the pin surface, and the pivot 38 'and the web plates 58, 60. ) Is further connected to each other by means of a welding seam or an adhesive seam (49) carried by the seam root with respect to the ring portion or ring element.

7. Concrete distributor mast according to claim 5 or 6, characterized in that the two pivots 38 'are welded together at the separation point 37 to form an integral hinge pin 38 at the end regions facing each other. .

Concrete distributor mast with a plurality of mast arms 14, 16, 18, 20 which can pivot about one another about a horizontal axis of rotation and which are connected to each other at joint points and connected to the rotating head 4 in an articulated manner. As such, the mast arms in the engagement point regions have hinge points 30 to which the drive is engaged with the engagement members 32, 34 of the engagement mechanism that cause mast arm movement, and the drive and engagement members 32, 34 are It consists of a group consisting of a hydraulic cylinder 32, a push rod and a biasing lever 34 as kinematic elements, wherein at least one of the hinge points 38 forms a bearing axis 36 and engages in the cross direction. In a concrete distributor mast having a hinge component arranged over one of the coupling members,
The hinge component has hinge pins 38 which protrude outwardly on both sides at one free end 40 and connect to one engagement member for rotation,
For rotational mounting of the engaging member 34 of the adjacent mast arm or coupling mechanism or the additional drive, a bearing shell 42 is arranged above the ends 40 of the hinge pin 38 projecting past one coupling member,
One coupling member has two web plates 58 ', 60' arranged at a distance in a transverse direction from each other.
In the hinge point 30 'region, the hinge pins 38 are arranged over the intermediate space 46 between the web plates 58, 60, and each hole 48 in the web plates 58, 60 is closed. A concrete distributor mast, characterized in that it projects outwardly from the free end 40 and is connected to the web plates 58 ', 60' for rotation.

10. Concrete distributor mast according to claim 9, characterized in that the hinge pins (38) are welded to the web plates (58 ', 60').

The ring pins (55) of claim 9 or 10, wherein the hinge pins (38) project radially past the pin surface and are arranged at a distance from each other between the web plates (58 ', 60'). Or ring elements, the hinge pin 38 and the web plates 58 ', 60' are further connected to each other by welding seams or adhesive seams 49 which are supported by the seam root with respect to the ring portion or ring element. Concrete splitter mast, characterized in that.

The hinge pin according to claim 9 or 10, wherein the hinge pin comprises two separate pin halves 39 ', 39 ", each of which has one of the protruding ends 40 and the separation point 37. Concrete distributor mast, characterized in that welded to each other).

10. The bearing shell 42 and the engagement member 34 are fixed and attracted to the ends 40 of the pivot 38 'or hinge pin 38. Concrete distributor mast characterized in that it is prevented.

10. The method of claim 1 or 5 or 9, characterized in that the coupling mechanism between the mast arms 14, 16, 18, 20 is configured as a Watt or Stephenson chain. Concrete splitter mast.

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